Showing 3537 hits for ””
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2022:03 Effect of Neutron Irradiation on the Oxidation and Corrosion of Austenitic Stainless Steels
SSM perspective Background Reactor pressure vessel internal components of austenitic stainless steel located close to the core are subject to a high neutron flux. Irradiation by fast neutrons induces changes in the material that affect microstructure, mechanical properties and microchemistry. These changes eventually lead to an increased susceptibility to irradiation assisted stress corrosion...
Content type: Publications -
2021:06 Quality Assurance Review of the Swedish Nuclear Fuel and Waste Management Company’s LOT Experiment (Phase S2 and A3) at the Äspö Facility in Sweden
SSM perspective Background This report presents a quality assurance (QA) review of the work done by SKB to retrieve the S2 and A3 parcels from the Long term test of buffer material (the LOT experiment) at the Äspö Hard Rock Laboratory. Each LOT parcel comprises a heated copper tube surrounded by bentonite, with a number of copper coupons and various other test and monitoring instruments...
Content type: Publications -
2021:19 Importance Sampling Time-Domain Random Walk (ISTIDRAW) Version 1.0 User Guide A Code for Radionuclide Transport in Pathway Networks
SSM perspective Background To support regulatory review of post-closure safety assessments of geological disposal systems it is of importance to possess regulatory independent modelling capacity. Typically, SSM’s independent modelling includes performing simple scoping calculations, utilizing the implementer’s own models with other equation solvers, or defining alternative conceptual models.
Content type: Publications -
2003:12 Analysis of Critical Issues in Biosphere Assessment Modelling and Site Investigation
The aim of this document is to present a critical review of issues concerned with the treatment of the biosphere and geosphere-biosphere interface in longterm performance assessment studies for nuclear waste disposal in Sweden. The review covers three main areas of investigation: a review of SKB’s plans for undertaking site investigations at candidate locations for the development of a deep...
Content type: Publications -
2003:14 Exchange processes at geosphere-biosphere interfaceCurrent SKB approach and example of coupled hydrological- ecological approach
The design of the repository for final disposal of spent nuclear fuel proposed by SKB is based on a multi barrier system, in which the geosphere and biosphere are the utmost barrier surrounding the engineer barriers. This report briefly reviews the current approach taken by SKB to account for hydrological and ecological processes at the geosphere-biosphere interface (GBI) and their future...
Content type: Publications -
2005:15 Radiological Protection in Transition; Proceedings of the XIV Regular Meeting of the Nordic Society for Radiation Protection, NSFS, Rättvik, Sweden, 27-31 August 2005
These proceedings comprise the papers and posters presented at the 14th Regular Meeting of the Nordic Society for Radiation Protection, the theme of which was ‘Radiological protection in transformation’. The traditional ‘Lindell lecture’, presented by H.H. Brunner from Switzerland, highlighted this theme under the title ‘From Pandora’s Box to Sisyphus’. There were sessions on international...
Content type: Publications -
2002:14 Review of C-14 inventory for the SFR facility
The Swedish Radiation Protection Authority (SSI) is currently reviewing SKB’s continuing assessment for disposal of radioactive waste to the SFR facility at Forsmark. Among the wastes disposed are reactor operating wastes. Among the relevant radionuclides is C-14, which is relatively difficult to measure and to control because of its mobility. This report documents a review of the C-14...
Content type: Publications -
2005:01 Reports from SSI:s International Independent Expert Group on Electromagnetic Fields 2003 and 2004
Part 1: The focus of the 2003 report is on epidemiological and experimental cancer research, blood-brain barrier and heat shock proteins. In none of these areas have there been breakthrough results since the British Stewart-report and the Swedish RALF-report that have warranted fi rm conclusions in one way or the other. Part 2: The three fi rst reports from the Interphone Study have been...
Content type: Publications -
2003:20e Focusing on SSI’s risk and radiation protection criteria. A report based on discussions in focus groups in Östhammar and Oskarshamn municipalities
The report contains the questions and points of views that emerged in the focus group discussions, from the municipalities participating in site selection investigation, will serve as a basis for the authority’s work of producing general guidelines associated with the regulations (SSI FS 1998:1). An expert group at the authority will answer or comment on the issues raised. Britt-Marie...
Content type: Publications -
96:40 Status and Use of PSA in Sweden
The performance and use of PSA:s in Sweden goes back about two decades. During all of this time, the field of PSA has been developing intensively, both internationally and within Sweden. The latest years have been characterised by an increased use of PSA models and results, and by major extensions of existing PSA models. The aim of this document is to describe PSA in Sweden with respect to...
Content type: Publications